Ickis is the main protagonist of Aaahh!!! Real Monsters. His method of scaring humans is the ability to grow bigger. However, due to Ickis' large ears, he is often cofused with a bunny rabbit. Ickis also tends to be on the nervous side and often has a lack of self-confidence, partly from trying to live up to the legacy of his father, Slickis, who was the academy's most renowned student.

He bears a resemblence to one of Steven Spielberg's Gremlins and mythological imps.